These mirrors were standard with the Trailer Special Package B, as well as the Camper Special Package. However, my 1980 brochure lists them as being an available add-on under the "Comfort and Convenience" checklist, so they could probably be ordered on anything. I'm not 100% sure on that. I've seen them on trucks with no Trailer Special badging so who knows.
The upper mount lines up on all of the trucks (the third hole needs to be drilled), however the bottom does not. I installed a used set of these that I found in a local junkyard on my old F150, but my truck originally came with the sport mirrors so I didn't have the lower mount holes to verify fitment and whether one of the lower mount holes may have matched up. I never got around to installing the riv-nuts to mount them fully in place so I have no idea. I've thought about adding these to my current truck, but I don't really feel it's worth the work or cost since you can just make the extensions yourself out of scrap mirror arms that are plentiful in junkyards.